1-hydroxy-6-substituted pyridine-2-ones and 1-hydroxy-6-substituted pyridine-2-thiones for biocidal use

A compound of the formula:

• ##STR5## wherein R" and R'" are independently either hydrogen or a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms.

A compound of the formula:

• ##STR6## wherein R" and R'" are independently either hydrogen or a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms, and
• wherein R" or R'" is an n-octyl moiety.

An antimicrobial composition comprising a functional product selected from the group consisting of shampoos or skin care medicaments further comprising an antimicrobially effective amount of a compound of the formula:

• ##STR7## wherein Y is an oxygen, sulfur, or NR' moiety, wherein N is nitrogen and R and R' are each a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms and conventional antimicrobial additives.

A method for inhibiting the growth of microorganisms by contacting said microorganisms on skin or scalp with a shampoo or skin care composition comprising an antimicrobial effective amount of a compound of the formula:

• ##STR8## wherein Y is an oxygen, sulfur, or NR' moiety, wherein N is nitrogen and R and R' are each a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms.

An antimicrobial composition comprising a functional product selected from the group consisting of shampoos or skin care medicaments, further comprising an antimicrobially effective amount of a compound of the formula:

• ##STR9## wherein R" and R'" are independently either hydrogen or a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms and conventional antimicrobial additives.

A method for inhibiting the growth of microorganisms by contacting said microorganisms or skin or scalp with a shampoo or skin care composition comprising an antimicrobial effective amount of a compound of the formula:

• ##STR10## wherein R" and R'" are either hydrogen or a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms and conventional antimicrobial additives.

An antimicrobial composition comprising a functional product selected from the group consisting of shampoos or skin care medicaments and further comprising an antimicrobially effective amount of a compound of the formula:

• ##STR11## wherein X is an oxygen or sulfur moiety and R is a substituted or unsubstituted hydrocarbon radical having between 1 and 20 carbon atoms, with the proviso that R is other than chlorobenzyl.